Rock Garden Plants
Penstemon aridus Rydb. sect. Penstemon 
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FamilyPLANTAGINACEAE
Genus speciesPenstemon aridus Rydb. sect. Penstemon
BibliographyMem. New York Bot. Gard. 1: 348 (1900)
Native Rangenw. USA
Primary BiomeTemperate
Habitatrocky slopes
Altitude1500-2900m
Descriptionbasal leaves glabrous, entire, narrow, 1-5cm long, linear-oblong, inflorescence with few, rather lax, few flowered whorls, flowers 12-18mm long, palate barbate
Size6-20cm
Colorblue
Bloomsummer
Ca
Typeperennial
Cultivationsunny rock crevices, protection against winter wet
alpine house, poor, drained soil, sun
Propagationseed in spring, barely covered, germ. 1-3 months, 13-18°C
division in spring; cuttings in late summer
Territory7 Northern America
     73 Northwestern U.S.A. (IDA Idaho, MNT Montana, WYO Wyoming)
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(c) 1990-2025 RNDr. Pavel Slabý